strcspn Find length of initial segment not matching mask &reftitle.description; intstrcspn stringstr1 stringstr2 intstart intlength Returns the length of the initial segment of str1 which does not contain any of the characters in str2. &reftitle.parameters; str1 The first string. str2 The second string. start The start position of the string to examine. length The length of the string to examine. &reftitle.returnvalues; Returns the length of the segment as an integer. &reftitle.changelog; &Version; &Description; 4.3.0 The start and length were added &reftitle.examples; <function>strcspn</function> example ]]> &example.outputs; &reftitle.notes; ¬e.bin-safe; &reftitle.seealso; strspn